Coupling for suction hose



June 3, 1930. LALLY 1,762,065.

COUPLING FOR SUCTION HOSE Filed May 18, 1928 Patented June 1930 v .application filed May 18,

7 My invention relates to certain improve Y ments in hose couplings, particularly of the type used in connection with the suction hose of fire apparatus. i a i The object of myinventionis to so construct the coupling that it can be quickly ap-l plied to the nozzle of a fire-plu'gior hydrant;

Fig. l is a perspectlve view'of my improved coupling; n Fig. 2 is a longitudinal sectional view;

Fig. 3 is a sectional view showing thespring latch;and H sectional view through the balln i is a i race. 7

The body thread 2 at one end to be coupled to the section of a coupling attached to a hose. Mount-' ed on the body-portion is a swiveled head? The body 1 andlthe main portion of the 'swiveled'head 3 haverace-ways .land 5, I'B-' spectively, in whichare a'series'of balls 6. In assembling the are inserted through-an opening 7 ;;and when all the balls are in place,' a plug Sisinserted in the openingy-the innerjend of the plug being shaped to correspond to therace-way 5.

The plughas a head 9; and a pinlOonthe v head extends into a hole in the swiveled'head screw-plug 11 then being inserted into thef I openingythus holding the plug8 in position.

fIThe swiveledflhead' sha V I i 1 which rests against the'end of the body'l,

v r and on theshouldered portion of the head 3 p v l fiis in the closed-position as shown in Fig. 2. Thecouplingcan be quicklyattachedto the nozzle of a plugand'the headl turne'd slightly to make a'tightfjoint; and thecou= is an internal segmental screw-thread 13. TI

,- Pivoted to the swivded head 3'lat1l4 is. as 4 segmental section 15 having a. shouldenlti' and an internal screw-thread ,17, These two;

parts align with similar partsfon "the": main portion of the swiveled head 3, sothat when" the segmental section is coupled toI-the main portion, the shoulders and screw-threads of,

'inFigl 2.

I of the coupling has a v "to allow access to the latch, whenit isv nece s-" two parts, the-two raceways are brought into alignment; the balls a shoulderfl 2 1928-. 5 'seiin No. 278,847. f the two parts In order to position 'a1atch-2O is used, which ismounted on a pm 18 on one section and has annnderwill b'e'in alignment as shown retainthe parts in the-closed cut'hook 19 whichis arranged toengage-a like pr-ojection 22'on the other section.

A'sprin'g 2l'encircles the pivot pin: 18, one I I 7 end of the spring bearing against the 'heel of thev-latch, and the other end' 'b'ea'ring is pivoted.

The body of to which the latch is pivoted, while the outer the segmental section.

The backof .th latchis flush vwith the box .i

like projection and the hi so thatit cannot be accidentally release The space'between the projection and thelug is suflicient sary to release the segmental section;

Located in the swiveled headii'is a gasket 25of rubber, leather ,;or other suitable may I terial. This gasket rests against aninternal I K ,fiange 26, on the swiveledfsectionand fits against the end of vthe plug nozzle whenthc coupling is applied to a plug. I On the iswiveled head v3 is a projecting hand-hold27, widen the segmental section; 15 is a hand-hold 28. The hand-holds are' not only usedto close the coupling'but are also used toturn the swivele'd head 3zon the in joint, V

'In'or'der to' pr'eve'nt the segmental section 15 ofthe swiveled headj3'from being' strained,

agegmental rib 29 is formed on the segmental section 15, which rib enters an annular groove 30 inthe body 1' when the segmental section 0 e againstthe wall of the part to'which the latchf r V threaded nozzle oftheplug to make;ajtight r which prevents the plug from turnlng, a I v 1 1Thei ball-bearing makes it possible to'screw ioolfiii v Q 1,762,065

' the'head onto the'nozzle of the plug, insuring a tight joint.

I claim: 7 V The combination in hose coupling, of a 1 body portion; a head swiveled thereon and.

- p having a projecting threaded segmental portion; a'movable threaded segmental portion pivoted tofthe head at one sidefthereof and p arranged to close against the projecting se mental portion of the head; a spring-late pivoted to the opposite side of the head and having a hook; and a projection at the end of the movable segmental portion with Which I the hook of the latch engages, the head hav i5 ing a box-like structure enclosing the body of the latch, and the movable segmental section having a' 111g which protects the outer end 0f the latch. V v

1 v v JOHN T. 'LALLY; 

